To johnson automobile sheet



E. F. HOLLARN, L. HUBBLE, E. G. EVERTON AND F. WILCOX. SHEET METAL FORMING MACHINE.

APPLICATION FILED OCT. 16, I919.

Patmed Nov. 30, 1920.

2 SHEETSSHEEI lamw/ntow.

E. F. HOLLARN, L. HUBBLE, E. G. EVERTON AND F. WILCOX.

METAL FORMING MACHINE. APPLICATION FILED OCT-.16, 1919.

Patented Nov. 30, 1920.

2 SHEETS-SHEET 2.

SHEET Sum/Moe: E. F HoI/avn, L HuLHQ,

E G E vr ton, F Wilcox; lgxg flttozgaq,

rid.

UNITED STATES PATENT OFFICE.

EDWARD F. noLLAEN, LEoNAED HUBBLE, EDWARD GRAY EVERTON, AND FRANK WILCOX, or RICHMOND, INDIANA, AssIGNoas T0 JOHNSON AUTOMOBILE SHEET METAL WORKS, or RICHMOND, INDIANA, A coEroEATIoN or INDIANA.

SHEET-METAL-FORMING MACHINE.

. Specification of Letters Patent.

Patented Nov. 30, 1920.

Application filed October 16, 1919. Serial No. 331,055.

" To all whom it may concern:

Be it known that. we, EDWARD F Hon- LARN, LEONARD I'IUBBLE, EDWARD GRAY EVERTON, and FRANK WILoox, all citizens of the United States, residing in the city of Richmond, in the county of WVayne and State of Indiana, have invented certain new and useful improvements in Sheet-Metal- Forming Machines, of which the following is a full, clear, and comprehensive specification and exposition, the same being such as will enable othersto make and use the same with exactitude.

The object of our invention, broadly speaking, is to provide certain specific improvements in sheet metal forming machines which will materially improve the resultant product, and at the same time reduce the amount of time and labor required in the work involved, and therefore reduce the cost of production, and making such machines more nearly automatic, and more positive in action, and providing for the construction and installation of such improvements at a comparatively low price.

Our invention is intended, more particularly, to be installed with machines for forming sheet metal fenders for automobiles or the like, wherein longitudinal compound curves, as well as cross curves, and marginal flanges are formed at one operation, and the specific object we attain-is to materially improve the resultant product, as well as to greatly lessen the manual labor involved therein.

Other minor'objects and particular advantages of the invention will suggest themselves to those familiar with the art, and that which is new will be correlated in the appended claims.

The preferred means for carrying out the princi les of our invention in a practical and efficient manner is shown in the accompanying drawings, in whichFigure l is a front elevation of a sheet metal forming machine in which our invention is incorporated.

Fig. 2 is a top plan view of our invention with certain parts of asheet metal formingmachine, showing the relation of parts therebetween. Fig. 3 is a central longitudinal section of the main portion of our invention and showing the rolls of the machine in cross section, and Fig. 4 is a perspective view of the essential member of our invention alone.

tion, and the advantages of our invention may be more fully understood andappreelated we will now take up a detailed description thereof, in which we will set forth the several features as fully and as comprehensively as we may, and in order to make the distinction more clear we will designate the parts which are old by letters and those which are new by numerals, the parts which are old being shown merely to make clear the application of our improvements thereto.

The machine herein shown comprises a framework, including the base A, from which extends upward the spaced apart standards B and C, in which are revolubly mounted the lower shaft D and the upper shaft E, said shafts being geared together as by the gear-wheels F and G, and they are of the same size with relation to each other. The shafts D and E are mounted at their ends in vertically sliding bearings, as the bearings H and I respectively, and the shaft E is adapted to be moved up and down by means of eccentrics J and K, which are controlled by the handles L and M, said handles being connected by the rod N whereby they will always move in unison.

Rigidly mounted on the central portion of the shaft D, concentric thereof, is the female or concave roll 0, which has integral therewith the end flanges P and Q. Rigidly mounted on the shaft E, concentric therewith, is the male or convex roll R whose longitudinal peripheral curvature is the same as that of the roll 0, but oppositely disposed with relation thereto, whereby they will nest together with the ends of the roll R fitting between the flanges P and Q, substantially as shown.

Mounted around the shaft D, extending between the standards B and C and engaging the ends of the roll orthe flanges P and (a), are the respective collars S and T.

Extending across the rear side of the frame is the shaft U which carries a rearwardly extending lever (not shown) to which is secured the crossbar V, which latter carries the concave metal shoe W. Said shoe is adapted to be raised and lowered by said lever in order to form the longer or first curve of the material, in this instance an automobile fender is being formed, in

which X denotes the long or first curve, and X denotes the shorter or second curve which, as shown, is a reverse curve to that of the former curve.

The parts above described successfully form the long curve X, and therefore our invention comprises the means for'forining only the reverse curve X upon the same sheet of material, the curve X being formed by pressing upward on the shoe V] as the material travels rearward between the rolls, 7

and the reverse curve X is formed by pressing downward on the shoe 7 when the material is again traveling rearward between the rolls.

Gur invention comprises a pair of spaced apart side arms 1 and 2, which are con nected at their outer ends by'the handle 3, with their inner portions forming collars l and 5, respectively, which are rotatably mounted on the shaft E whereby the handle dinally with the curvature of the rolls t) and P, with its forward portion tapering to an edge which is even with the tangency of the rolls O and P, that is the lower edge or" the shoe 7 is level, with the-point of contact of said rolls, or very slightly thereabove, as shown in Fig. 3.

From the above it will be seen that as the cross-bar is pivotally mounted the shoe 7 will be free to swing forward and bacle ward, thereby enabling it to adjust itself to the curvature of the material being acted upon.

Moclus operrmdi: In practice the machine is operated by applying power to revolve the shafts D and E, whereby the rolls 0 and R will revolve in directions opposite to each other, rolling on the material therebetween. The sheets of material are first cut to the desired dimensions and the side flanges thereof are turned at right angles thereto. One end of the sheet of material is started between the rolls, at the front of the ma chine and the shape of the rolls will press the material so as to give it the proper cross-section curve and at the same time the side portions, or flanges, of the material traveling between the ends of the roll R and the flanges ,P andQ will retain them the angle to which they have been formed.

The long longitudinal curve X is given to the material as it issues from between the rolls in the rear, by means of the shoe W, which is pressed upward against the undersic e of the material, this being accomplished by amanually operated lever, the details of which is not material to an understanding of this invention. Th n when thematerial is again traveling between the rolls in the same direction as before the shoe W is first removed, and the shoe 7 may then be pressed down upon the material by the operator applying weight to the handle 3 whereby the pressure will be applied as the material enters between the rolls, the degree of pressure lepending on the amount of curvature de sired, thereby forming the longitudinal short 'or reverse curve X, the accomplishment of which is the main desideratum of this invention.

Fromv the above it willbe seen that the shoe 'W causes the formation of the bend X, after which the shoe W is removed or swung out of position; and that the shoe 7 causes the formation of the bend X, after which the shoe 7 is swung out of position.

We desire that it beunderstood that various changes may be made in the details of construction, in the arrangement 'of the parts, and the manner of operation without departing from the spirit of the invention and without sacrificing any of the advantages thereof.

Having now fully shown and described our invention, and the preferred meansfor its construction and operation to us known at this time, what we claim and desire'to secure by Letters Patent of the United States, is-

1. In combination with a sheet metal forming machine having an upper roll and a lower roll and having means on one side of the machine for causing one portion of a strip of sheet metal to bend longitudinally forming a long curve of the major portion of the material, a shoe located on the opposite side of the machine and above the point of contact of said rolls for causing the minor portion ofthe material to bend longitudinally in a short curve which is revers'ely to the first curve, means for pivotedly connecting said shoe to the machine, and a handle connected with said shoe whereby the shoe may be manipulated manually.

2. In combination with a sheet metal forming machine having an upperroll and y a lower roll and having means on one side of the machine for causing one portion o f'a strip of materialto be curved as itis'sues from between the rolls; a shoe located'on the opposite side ofthe machine and above the tangency of-said'rolls,a pair of arms pivoted to the machine and extending therefrom with said shoe mounted between said arms and carriedth'ereby, a handle connecting said arms, the said shoe being adapted to be manually manipulated by the operation of said handle to cause the said material, as it enters between said rolls, to be curved reversely to that of the first mentioned curvature.

3. In combination with a sheet metal forming machine of the character set forth comprising a pair of spaced apart arms rotatably mounted at their inner ends on the shaft of the upper roll, a handle connecting the outer ends of said arms, a cross-tie pivotedly connected to said arms and a shoe secured to said cross-tie and adapted to press upon material immediately prior to its entry into the machine, all substantially as shown and described.

a. In combination with a pair of rolls geared to revolve in contact with material placed therebetween for forming the sheet material as to its cross section curvature; a pair of arms pivoted to the machine concentric with one of said rolls, a cross-tie pivotedly connected with said arms, a shoe carried by the cross-tie and conforming with the shape of the material in cross section and adapted to be pressed upon the material to cause the material to curve longitudinally, the edge of said shoe being located near the tangency of said rolls, all substantially as set forth.

5. In combination with a sheet metal forming machine including a pair of rolls between which the material operates to form it curved in cross section, and having a shoe adapted to press upward against the material as it issues from between the rolls for forming the material curved longitudinally; a second shoe located at the opposite side of the rolls from that of the first shoe and adapted to press downward on the material as it enters between the rolls to form a second longitudinal curve in the material reversely to that of the first mentioned longitudinal curve.

6. In combination with a metal shaping machine including rolls between which material travels to form the material the desired shape in cross section and having means located on one side of the machine and connected therewith for forming a longitudinal curve in one portion of the material; arms extending from the other side of the machine and pivoted thereto, a crossbar pivoted to and extending between said arms, a shoe secured to said cross-bar with its edge located above and adapted to be brought down into line with the tangency of said rolls, said shoe being adapted to cause one portion of the material to curve longitudinally reversely to the first mentioned curve, all substantially as shown and described.

In testimony whereof we have hereunto subscribed our names to this specification in the presence of two subscribing witnesses.

EDWARD F. HOLLARN. LEONARD HUBBLE. EDWARD GRAY EVERTON. FRANK VVILGOX.

Witnesses:

Roar. W. RANDLE, R. E. RANDLE. 

